unique engagement ring in jewelry are the most popular of all gemstones. Their price and rarity is carefully monitored by the major diamond cartels. As a result the price of gold engagement ring in jewelry is pretty well standardized to size and quality of the stone.
A smaller ideal cut on a small size hand can look normal while a small gold engagement ring on a large hand can look overpowered.
Pink and blue anniversary rings is especially popular and has been sold at higher dollars per carat than any other loose gemstones in history. Red, green, and purple gold engagement ring is among the rarest of the rare.